Auricle (Lat. auricula, a little ear). A cavity of the heart.
Azygos (Gr. ἀ, without, and ζυγός, a yoke). Without fellow; not paired.
Bacteria (βακτήριον, a staff). A microscopic, vegetable organism; certain species are active agents in fermentation, while others appear to be the cause of infectious diseases.
Bactericide (Bacterium and Lat. caedere, to kill). Same as germicide.
Bile. The gall, or peculiar secretion of the liver; a viscid, yellowish fluid, and very bitter to the taste.
Biology (Gr. βίος, life, and λόγος, discourse). The science which treats of living bodies.
Bladder (Saxon bleddra, a bladder, a goblet). A bag, or sac, serving as a receptacle of some secreted fluid, as the gall bladder, etc. The receptacle of the urine in man and other animals.
Bright’s Disease. A group of diseases of the kidney, first described by Dr. Bright, an English physician.
Bronchi (Gr. βρόγχος, windpipe). The first two divisions, or branches, of the trachea; one enters each lung.
Bronchial Tubes. The smaller branches of the trachea within the substance of the lungs terminating in the air cells.